This Ford F-250 pickup was transporting 23 people Sunday night before it was involved in a one-vehicle crash on U.S. Highway 59 near Berclair. As of midnight Sunday, 12 of the occupants of the vehicle had died and 11 others were transported to hospitals. By noon Monday, the total killed had increased to 14.

GOLIAD COUNTY – Twelve people died in a one-vehicle wreck that occurred Sunday at around 6:30 p.m. on U.S. Highway 59 just north of Berclair.

According to Texas DPS Lt. Glenn Garrett, a 2000 Ford F-250 pickup was traveling northbound with 23 occupants when it lost control, swerved toward the right off the highway and struck a tree.

"We had 11 fatalities on scene and there were 12 people who were transported to a variety of hospitals and one of those has died in a Corpus Christi hospital," Garrett said.

Garrett said all the victims were believed to be Mexican nationals. DPS was still trying to learn the identifications of the victims as of late Sunday.

"We're working with the border patrol and ICE and they're helping to work on the identifications of all the victims," Garrett said.

According to Garrett, investigators suspected a blowout of one of the pickup's tires led to the driver losing control of the vehicle.

"There is nothing to indicate they were driving over the speed limit. The speed limit is 75 mph here," Garrett said. "It looks like it was a tire deflation in the right front tire."

Six of the dead were found inside the cab of the pickup. Five passengers riding in the bed of the pickup were killed after being ejected.

Emergency workers didn't finish removing bodies from the scene until around 11 p.m.

Four of the injured were transported by ambulance to Victoria's DeTar Navarro Hospital before being airlifted to a San Antonio hospital. One victim was airlifted from the scene to San Antonio, three were airlifted to a Corpus Christi hospital, and four were transported by ambulance to Bee County Hospital.